Segmental Model Test of a Sunflower Arch Bridge and Joint Optimal Design
Abstract
A 1:5 scaled segmental model test of a sunflower arch bridge was performed to explore the stress and displacement responses of this new type of arch bridge. Displacement and stress at key sections of the model were measured. The measured stresses of the concrete showed that the maximum tensile stress under a dead load at the end of the spandrel arch was larger than the tensile strength of the concrete, which means cracks will occur in these regions. To avoid cracks an optimized design of the joint was proposed in which I-section steel beams were used to replace the concrete at the end of the spandrel arch. Through a comprehensive parametric analysis using the experiment verified finite element model, effect of number, length and flange thickness of I-section steel beams on the displacement and stress responses of the model were obtained. Finally, optimized geometrical dimensions, number and length of the I-section steel beams were suggested.
Keywords
Sunflower arch bridge Model test Joint Optimal designReferences
- 1.Xiang, Y.Q., Zhang, L.C., Wu, Q.Q.: Behaviour analysis of prestressed concrete deck-tied arch bridge. Adv. Mater. Res. 671–674, 952–956 (2013)CrossRefGoogle Scholar
- 2.Wang, W.Q.: Structural optimization design on the sunflower shaped arch bridge. Appl. Mech. Mater. 427–429, 90–93 (2013)Google Scholar
- 3.Shen, J.W.: Research on the mechanical properties of the sunflower arch bridge and node model test, Master degree thesis, Guangzhou University, Guangzhou, China (2015). (in Chinese)Google Scholar
- 4.Huang, Y.H., Fu, J.Y., Liu, A.R., et al.: Model test and optimal design of the joint in a sunflower arch bridge. J. Bridge Eng. 24(2), 04018121 (2019)CrossRefGoogle Scholar
- 5.CJJ/T 233-2015. Technical code for test and evaluation of city bridges. Beijing, China (2016). (in Chinese)Google Scholar
- 6.JTG D64-2015. Specifications for design of highway steel bridge. Beijing, China (2015). (in Chinese)Google Scholar